171 
referred it to O. diennis,* a doubtful disposition unless the plant 
is introduced. I have not seen specimens of this form. 
3a. ONAGRA BIENNIS GRANDIFLORA (Ait.) Lindl. 
OLnothera grandiflora Ait. Hort. Kew. 2: 2. 178g. 
OEnothera suaveolens Desf. Tab. 169. 1804. 
OLnothera biennis var. grandiflora Lindl. Bot. Reg. 19. pl. 1604. 
1833. . 
OLnothera Lamarkiana Ser. in DC. Prodr. 3: 47. 1828. 
Range the same as the species, more common in the Southeast; 
introduced in the vicinity of San Francisco according to Prof. 
Greene. 
4. ONAGRA OaKEsIANA (A. Gray) Britton. 
OLnothera biennis var. Oakesiana A. Gray, Man. Ed. 5,178. 1867. 
OEnothera Oakesiana Robbins; A. Gray, Man. Ed. 5, 178. As 
synonym. 1867. : 
Onagra Oakesiana Britton, Mem. Torr. Club, 5: 233. 1894.- 
Shores of the St. Lawrence, west to the Great Lake region, 
south to New York and Nebraska. 
5. OnacrRA Hooxert (T. & G.). 
OLEnothera Hookeri T. & G. Fl. N. A. 1: 493. 1840. 
OEnothera biennis Torr. Emory Rep. 140. 1848. Not L. 
? OEnothera odorata H. & A. Bot. Beech. Voy. 343. 1841. 
OEnothera biennis var. hirsutissima A. Gray, Pl. Fendl. 43. 1848. 
Western slopes of the Rocky Mountains, west to the Pacific; at 
1800 meters in Utah. 
It seems remarkable that this excellent species could be con- 
founded with O. dennis. Its gross characters are so strong that a 
scrap or even a leaf is sufficient to separate it from related species. 
It does not range east of the Rocky Mountains and is the western 
homologue of the eastern O. dennis. 
6. Onacra Jamest (T. & G). 
OEnothera Jamesii T. & G. Fl. N. A. 1: 493. 1840. 
Southern Utah south to eastern Texas and eastern Arizona. 
* Man. Bot. Bay Reg. 131. 
